Home / 1,124,853.40-1,687,428.10-415,379.80

Finding the Fourth Proportional to 1,124,853.40, 1,687,428.10 and 415,379.80

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Solution

The fourth proportional to 1,124,853.40, 1,687,428.10 and 415,379.80 is: 623,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124,853.40 : 1,687,428.10 = 415,379.80 : x
  2. Step 2: Convert to fraction form
    1,124,853.40/1,687,428.10 = 415,379.80/x
  3. Step 3: Cross multiply
    1,124,853.40x = 1,687,428.10 × 415,379.80
  4. Step 4: Simplify right side
    1,124,853.40x = 700,923,546,692.38
  5. Step 5: Solve for x
    x = 700,923,546,692.38/1,124,853.40
  6. Step 6: Final answer
    x = 623,124.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.